610 Dr. G. B. LongstafF's Bionomic Notes on Butterflies. 



on 14 April, 1907, and were examined for scent when 

 their enclosing papers were opened at Oxford on May Gtli, 

 or three weeks after death. One of them — H. euryadcs, ^ 

 — had no scent ; the others — H. hydar^is, 3 ^, 1 $ — had a 

 slight, but quite decided, scent ! Yet, curiously enough, 

 in the case of two of these male hydarus, I did not find 

 it possible on the day of capture to be sure that they had 

 any perceptible scent. Finally, when a drawer containing 

 all my black and red Hcliconii was opened on 15 July, 

 or three months after death, the odour, though faint and 

 evanescent, was distinctly perceptible in spite of the 

 presence of naphthalene ! 



I have since heard from a professional setter that he 

 had often noticed when setting them that Heliconii had a 

 peculiar scent. 



Heliconius charitlwnia, Linn. (Jamaica, 1907). With 

 this species the majority of observations gave negative 

 results, nevertheless in 3 ^ and 2 $ a slight pleasant 

 flowery scent was detected. In one example of each sex 

 this was confirmed by my wife, who described the odour as 

 " sweet." 



Eucidcs aliphcra, Godt. (Trinidad, 1907). Three ^ were 

 examined, 2 with a negative result ; the third was 

 noted as having " a strong Dione scent," i. e. an odour like 

 that of a stable, or of asses. Two $ were also exammed ; 

 they both had decided odours described respectively as : — 

 "peculiar scent, ? acetylene; strong when alive," and as 

 " strong Dione scent when living ; slight flowery scent 

 when dead." 



LYC^NIDiE. 



Cyaniris singalensis, Felder (Ceylon, 1908). Six out 

 of 8 ^ had a scent of varying intensity, described in 

 all cases as sweet, once as "luscious," and once as " Frecsia- 

 like." 



Nacaduha atrata, Horsf. (Ceylon, 1908). Two $ had 

 a sweet flowery scent, confirmed by Mrs. Longstaff, and in 

 one case compared by her to " very, very faint jasmine." 



Lamindes elpis, Godt. (Ceylon, 1908). Five t all those 

 examined, had a sweet scent, which in one instance was 

 compared (with some hesitation) to clover. 



Zampidcs lactcida, De Nice v. (Ceylon, 1908). Nine $ were 

 examined, all had a distinct smell which was compared to 

 vanilla biscuits, or chocolate sweets. 



